Multi Wavelength Continuum Emission Of Agn

Author : International Astronomical Union. Symposium
Publisher : Springer
Page : 570 pages
File Size : 45,6 Mb
Release : 1994-04-30
Category : Science
ISBN : UVA:X002451078

Get Book

Multi-Wavelength Continuum Emission of AGN by International Astronomical Union. Symposium Pdf

(Note: the title actually, but erroneously, shown on the dust jacket, cover, and title page is Multi-Wavelength Continuum Emission of AGN, which is really only the heading of the first section of the volume. Because the correct, but omitted, title subsumes the erroneous title, Book News uses it in order to most accurately establish the reach of the volume.) The proceedings, then, of IAU Symposium No. 159, held in Geneva, Switzerland, August-September 1993, contain almost all of the presentations given at the conference both as posters and as oral invited and contributed papers. They address topics in multi- wavelength continuum emission of AGN; new observations of AGN with specific instruments; variability; correlations between emission components; AGN physics and models; unified schemes and relations with other types of objects; continuum studies; emission processes; x-rays and higher energies; variability; radio emission (maps); line studies; disk structure and emission; and statistical studies and evolution. Annotation copyright by Book News, Inc., Portland, OR

Author : T.J.-L. Courvoisier,A. Blecha
Publisher : Springer
Page : 0 pages
File Size : 42,8 Mb
Release : 1994-05-14
Category : Science
ISBN : 940109537X

Get Book

Multi-Wavelength Continuum Emission of AGN by T.J.-L. Courvoisier,A. Blecha Pdf

Active Galactic Nuclei radiate over the electro-magnetic spectrum from radio waves to gamma rays. Understanding the physics of these objects therefore requires the synthesis of results from many different domains of Astronomy. It was the aim of the conference "Active Galactic Nuclei across the Electromagnetic Spectrum" to provide a forum where this exchange could take place. Some 300 astronomers participated to the conference, 250 of them presented results either as oral papers or in the form of posters. Observations in all domains of the electro magnetic spectrum in which astronomical observations can be made from the ground or from space were presented. Many theoretical contributions were also given. There has been a tremendous growth in the number and quality of Astronomical obser vations in many spectral domains over the past several years. Students of Active Galactic Nuclei have been particularly keen to make use of the available facilities (both space born and on the ground), often in a very organised way, in order to obtain repeated simultane ous data covering large bands of the spectrum. This approach has produced a qualitatively new set of data for understanding the physics of Active Galactic Nuclei. The task of the meeting was to review this data in a coherent way.

Author : Raúl Mújica,Roberto Maiolino
Publisher : World Scientific
Page : 456 pages
File Size : 50,9 Mb
Release : 2004-10-12
Category : Science
ISBN : 9789814481748

Get Book

Multiwavelength AGN Surveys by Raúl Mújica,Roberto Maiolino Pdf

The huge amount of data obtained by surveys in all wavebands, from radio to X-rays, has allowed major progress in the understanding of Active Galactic Nuclei and of their cosmic evolution. This book contains the proceedings of a conference intended to give a broad overview of the recent results obtained by recent AGN surveys over the whole electromagnetic spectrum. Topics which were discussed during the conference and are included in this volume are: AGN evolution, contribution to the cosmic background, AGN luminosity functions in different wavebands, multiwavelength properties of AGN, unified model and unconventional AGN, connection with the host galaxies, co-evolution of AGN and galaxies, implications for the local density of supermassive black holes. Future AGN surveys planned with forthcoming new observational facilities are also included. The proceedings have been selected for coverage in: • Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings) • Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings) • CC Proceedings — Engineering & Physical Sciences Contents:AGN Surveys:X-Ray SurveysOptical and Infrared SurveysRadio and Millimeter SurveysResults from Surveys:Statistical Properties of Local AGNUnification and Unconventional AGNSpectral Energy DistributionLuminosity Functions, Evolution and Contribution to the Cosmic BackgroundAGN–Galaxy Coevolution and Relic Black HolesAGN and Large Scale Structures Readership: Graduate students, researchers and academics in extragalactic, astronomy and cosmology. Keywords:AGN;Surveys;QSOs: SMBH;Cosmology

Author : R. MAIOLINO (Ed)
Publisher : World Scientific
Page : 459 pages
File Size : 48,8 Mb
Release : 2004
Category : Science
ISBN : 9789812560490

Get Book

Multiwavelength AGN Surveys by R. MAIOLINO (Ed) Pdf

The huge amount of data obtained by surveys in all wavebands, from radio to X-rays, has allowed major progress in the understanding of Active Galactic Nuclei and of their cosmic evolution. This book contains the proceedings of a conference intended to give a broad overview of the recent results obtained by recent AGN surveys over the whole electromagnetic spectrum. Topics which were discussed during the conference and are included in this volume are: AGN evolution, contribution to the cosmic background, AGN luminosity functions in different wavebands, multiwavelength properties of AGN, unified model and unconventional AGN, connection with the host galaxies, co-evolution of AGN and galaxies, implications for the local density of supermassive black holes. Future AGN surveys planned with forthcoming new observational facilities are also included.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings? (ISTP? / ISI Proceedings)? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Sciences

Author : Bradley M. Peterson,Ronald Sylvester Polidan,Richard William Pogge
Publisher : Unknown
Page : 568 pages
File Size : 46,5 Mb
Release : 2001
Category : Science
ISBN : UOM:39015050776957

Get Book

Probing the Physics of Active Galactic Nuclei by Multiwavelength Monitoring by Bradley M. Peterson,Ronald Sylvester Polidan,Richard William Pogge Pdf

Annotation Papers from a June 2000 meeting discuss multiwavelength monitoring methods for studying active galactic nuclei, the potential of dedicated facilities for multiwavelength monitoring, and future multiwavelength programs. Some topics discussed are multiwavelength observations of blazars, time delays of blazar flares observed at different wavebands, low radiative-efficiency accretion flows, spectrochronography, and variability of the intrinsic UV absorption lines in Seyfert galaxies. Other topics are the variable diffuse continuum emission of broad-line clouds, the MIDEX concept, and the mission. Peterson teaches astronomy at The Ohio State University. This volume lacks a subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Author : Christopher Mark Harrison
Publisher : Springer
Page : 193 pages
File Size : 42,9 Mb
Release : 2016-01-20
Category : Science
ISBN : 9783319284545

Get Book

Observational Constraints on the Influence of Active Galactic Nuclei on the Evolution of Galaxies by Christopher Mark Harrison Pdf

This prize-winning Ph.D. thesis by Chris Harrison adopts a multi-faceted approach to address the lack of decisive observational evidence, utilising large observational data sets from several world-leading telescopes. Developing several novel observational techniques, Harrison demonstrated that energetic winds driven by Active Galactic Nuclei (AGN) are found in a large number of galaxies, with properties in agreement with model predictions. One of the key unsolved problems in astrophysics is understanding the influence of AGN, the sites of growing supermassive black holes, on the evolution of galaxies. Leading theoretical models predict that AGN drive energetic winds into galaxies, regulating the formation of stars. However, until now, we have lacked the decisive observational evidence to confirm or refute these key predictions. Careful selection of targets allowed Harrison, to reliably place these detailed observations into the context of the overall galaxy population. However, in disagreement with the model predictions, Harrison showed that AGN have little global effect on star formation in galaxies. Theoretical models are now left with the challenge of explaining these results.

Author : Anonim
Publisher : Atlantica Séguier Frontières
Page : 524 pages
File Size : 43,6 Mb
Release : 1996
Category : Cosmology
ISBN : 2863322001

Get Book

Cosmion-94 by Anonim Pdf

Author : Bradley M. Peterson
Publisher : Cambridge University Press
Page : 258 pages
File Size : 46,5 Mb
Release : 1997-02-13
Category : Science
ISBN : 0521479118

Get Book

An Introduction to Active Galactic Nuclei by Bradley M. Peterson Pdf

How can we test if a supermassive black hole lies at the heart of every active galactic nucleus? What are LINERS, BL Lacs, N galaxies, broad-line radio galaxies and radio-quiet quasars and how do they compare? This timely textbook answers these questions in a clear, comprehensive and self-contained introduction to active galactic nuclei - for graduate students in astronomy and physics. The study of AGN is one of the most dynamic areas of contemporary astronomy, involving one fifth of all research astronomers. This textbook provides a systematic review of the observed properties of AGN across the entire electromagnetic spectrum, examines the underlying physics, and shows how the brightest AGN, quasars, can be used to probe the farthest reaches of the Universe. This book serves as both an entry point to the research literature and as a valuable reference for researchers in the field.

Author : C. Jaschek,C. Sterken
Publisher : CUP Archive
Page : 296 pages
File Size : 50,6 Mb
Release : 1988-08-26
Category : Science
ISBN : 0521361575

Get Book

Coordination of Observational Projects in Astronomy by C. Jaschek,C. Sterken Pdf

Author : Hirofumi Noda
Publisher : Springer
Page : 153 pages
File Size : 55,7 Mb
Release : 2015-12-07
Category : Science
ISBN : 9789812877215

Get Book

X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku by Hirofumi Noda Pdf

The aim of this research was to use the X-ray satellite Suzaku to establish a picture of a central engine that effectively converts the gravitational energy of accreting matter onto the supermassive black hole to a huge amount of radiation in an active galactic nucleus. Although the engine is known to consist of a Comptonizing corona and an accretion disk, its image has remained unclear because primary emissions, coming directly from the engine, cannot be identified in X-ray spectra without models. The book describes a technique of time variability assisted spectral decomposition to model-independently examine X-ray signals, and how this was applied to the Suzaku archive data of active galactic nuclei. As a result, at least three distinct primary X-ray components have been discovered in an X-ray from an active galactic nucleus, presumably indicating a novel picture that the engine is composed of multiple coronae with different physical properties in an accretion flow. Furthermore, the determination of the spectral shapes of the primary X-rays has a significant impact on estimations of black hole spins, because it is essential to quantify reprocessed X-ray spectra. The successful model-independent decomposition of X-ray spectral components with flux variations of active galactic nuclei is likely to be effective in future data analyses from the soon-to-be-launched Japanese X-ray satellite ASTRO-H, which is capable of achieving unprecedented fine spectros copy and broad energy band coverage.

Author : Ajit K. Kembhavi,Jayant V. Narlikar
Publisher : Cambridge University Press
Page : 488 pages
File Size : 52,6 Mb
Release : 1999-03-11
Category : Science
ISBN : 0521479894

Get Book

Quasars and Active Galactic Nuclei by Ajit K. Kembhavi,Jayant V. Narlikar Pdf

The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students.

Author : Glen Mackie
Publisher : Cambridge University Press
Page : 269 pages
File Size : 48,8 Mb
Release : 2011-01-06
Category : Science
ISBN : 9781139494465

Get Book

The Multiwavelength Atlas of Galaxies by Glen Mackie Pdf

Since the radio signature of our own Milky Way was detected in 1931, galaxies have been observed from ultra-high energy gamma rays to long wavelength radio waves, providing fundamental insights into their formation, evolution and structural components. Unveiling the secrets of some of the best-observed galaxies, this atlas contains over 250 full-color images spanning the whole electromagnetic spectrum. The accompanying text explains why we see the component stars, gas and dust through different radiation processes, and describes the telescopes and instruments used. This atlas is a valuable reference resource on galaxies for students seeking an overview of multiwavelength observations and what they tell us, and researchers needing detailed summaries of individual galaxies. An accompanying website, hosted by the author, contains slide shows of the galaxies covered in the book. This is available at www.cambridge.org/9780521620628.

Author : Harald Riffert,Hanns Ruder,Hans-Peter Nollert,Friedrich W. Hehl
Publisher : Springer Science & Business Media
Page : 291 pages
File Size : 48,6 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783663112945

Get Book

Relativistic Astrophysics by Harald Riffert,Hanns Ruder,Hans-Peter Nollert,Friedrich W. Hehl Pdf

During the first decades after Einstein had developed his Theory of General Relativity, the main effort was to understand the theory and verify it experimentically. Meanwhile Genral Relativity is one of the experimentally best confirmed theories and has become a powerful tool for the investigation of cosmic processes where strong gravitational fields are involved. This book contains 16 contributions from well-known experts giving a broad overview for non-specialists who want to learn how to purely academic issues like gravitational wave detectors are now put into reality.

Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 564 pages
File Size : 53,8 Mb
Release : 1995
Category : Artificial satellites
ISBN : UIUC:30112038080112

Get Book

NASA Newsletter for International Ultraviolet Explorer (IUE). by United States. National Aeronautics and Space Administration Pdf

Author : Anonim
Publisher : Unknown
Page : 502 pages
File Size : 43,6 Mb
Release : 1994
Category : Artificial satellites
ISBN : UOM:39015053349604

Get Book

NASA Newsletter for International Ultraviolet Explorer (IUE). by Anonim Pdf